CN102843344A - Signal transmission method of minitype base station - Google Patents
Signal transmission method of minitype base station Download PDFInfo
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- CN102843344A CN102843344A CN2011101714344A CN201110171434A CN102843344A CN 102843344 A CN102843344 A CN 102843344A CN 2011101714344 A CN2011101714344 A CN 2011101714344A CN 201110171434 A CN201110171434 A CN 201110171434A CN 102843344 A CN102843344 A CN 102843344A
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- face data
- base station
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/60—Network streaming of media packets
- H04L65/65—Network streaming protocols, e.g. real-time transport protocol [RTP] or real-time control protocol [RTCP]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/80—Responding to QoS
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/10—Flow control between communication endpoints
- H04W28/14—Flow control between communication endpoints using intermediate storage
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/04—Large scale networks; Deep hierarchical networks
- H04W84/042—Public Land Mobile systems, e.g. cellular systems
- H04W84/045—Public Land Mobile systems, e.g. cellular systems using private Base Stations, e.g. femto Base Stations, home Node B
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- Engineering & Computer Science (AREA)
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- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention relates to a signal transmission method of a minitype base station, which comprises the following step that real-time transmission protocol (RTP) packets are received by the minitype base station from a user device and are cached in a cache area. When the RTP packets are cached for a certain period of time, the cache area is sampled by the minitype base station at the first frequency to produce a plurality of user-oriented data packets, and the user data packets comprise a current user-oriented data packet. When a previous user-oriented data packet received from the user device does not exist, the timestamp corresponding to the current user-oriented data packet is obtained by the minitype base station through calculation according to a current timestamp. When the previous user-oriented data packet exists, the timestamp corresponding to the current user-oriented data packet is obtained by the minitype base station according to the timestamp and a connection frame number CFN corresponding to the previous user-oriented data packet and a CFN of the current user-oriented data packet.
Description
Technical field
The present invention relates to a kind of method for transmitting signals of miniature base station.
Background technology
Miniature base station (femtocell) can be linked into core net (core network) through the Internet (internet).The network environment of the Internet can make data when transmission, receive uncertain shake or packet loss usually; Make that (real-time transport protocol, RTP) bag also presents packet loss or shake to miniature base station and gateway (gateway) RTP through internet transmission.Because third generation network has hard real-time (hard real-time); The former RTP that presents packet loss or shake can directly present to the user with the form of audio or video after encapsulating and being sent to mobile device, and the user can hear the sound of distortion or be full of the picture of mosaic.Thus, with perceptibility that badly influences the user and operator's reputation.
Summary of the invention
The object of the present invention is to provide a kind of method for transmitting signals of miniature base station; Utilize the miniature base station will be from RTP (the real-time transport protocol of the Internet; RTP) it is correct and do not have the user face data bag of packet loss that bag is adjusted into relative time delay (time delay), to be forwarded to subscriber equipment.
According to a first aspect of the invention, propose a kind of method for transmitting signals of miniature base station, comprise the following steps.Miniature base station receive from a Internet and a plurality of RTPs of buffer memory (real-time transport protocol RTP) is wrapped in a buffering area.When these a little RTP encapsulate after buffer memory reaches a time period; To produce a plurality of timestamps of a plurality of user face data bags and corresponding these a little user face data bags of record, these a little user face datas comprise active user's face packet to miniature base station with a first frequency sampling buffer.When a last user face data bag that is transferred to a subscriber equipment does not exist, (connection frame number CFN) calculates the CFN of corresponding active user's face packet to miniature base station according to a current connection frame number.When last user face data bag exists, miniature base station calculates the CFN of corresponding active user's face packet according to the CFN of the last user face data bag of correspondence and timestamp, the timestamp that reaches corresponding active user's face packet.Miniature base station transmits the CFN of active user's face packet and corresponding active user's face packet to subscriber equipment.
According to a second aspect of the invention, propose a kind of method for transmitting signals of miniature base station, comprise the following steps.Miniature base station from a subscriber equipment receive and a plurality of RTPs of buffer memory (real-time transport protocol RTP) is wrapped in a buffering area.When these a little RTP encapsulate after buffer memory reaches a time period, to produce a plurality of user face data bags, these a little user face datas comprise active user's face packet to miniature base station with a first frequency sampling buffer.When a last user face data bag that receives from subscriber equipment does not exist, miniature base station stabs the timestamp that calculates corresponding active user's face packet according to a current time.When last user face data bag exists; Miniature base station according to the timestamp of the last user face data bag of correspondence be connected frame number (connection frame number, CFN), and the CFN of corresponding active user's face packet obtain the timestamp of corresponding active user's face packet.
Describe the present invention below in conjunction with accompanying drawing and specific embodiment, but not as to qualification of the present invention.
Description of drawings
Fig. 1 illustrates the flow chart according to the method for transmitting signals of the miniature base station of an embodiment;
Fig. 2 illustrates the flow chart according to the method for transmitting signals of the miniature base station of another embodiment.
Embodiment
Below in conjunction with accompanying drawing structural principle of the present invention and operation principle are done concrete description:
The method for transmitting signals of miniature base station (femtocell) proposed by the invention; Utilize the miniature base station will be from RTP (the real-time transport protocol of the Internet (internet); RTP) bag is regular is the user face data bag of rate stabilization; And can mend bag automatically, so be able to optimize the overall signal transmission quality of miniature base station.
Please with reference to Fig. 1, it illustrates the flow chart according to the method for transmitting signals of the miniature base station of an embodiment.In step S100, miniature base station receives from a Internet and a plurality of RTP of buffer memory are wrapped in a buffering area.Miniature base station can bufcreate earlier in fact, and sets buffering area for only writing.Afterwards, when buffering area be written into reach a time period after, miniature base station is set buffering area again for being read.Wherein, according to the quality of current network, this time period can be conditioned.Corresponding to the circuit of normal domestic use family networking at present, this time period for example is 500 milliseconds, but does not limit.This time period also cannot be long, in order to avoid corresponding subscriber equipment initiatively stops business because of excessive delay.
In step S110; When these a little RTP encapsulate after buffer memory reaches a time period; To produce a plurality of timestamps (timestamp) of a plurality of user face data bags and corresponding these a little user face data bags of record, these a little user face datas comprise active user's face packet to miniature base station with a first frequency sampling buffer.Wherein, when these a little RTP wrapped the diaphone audio data, first frequency for example was per 20 milliseconds of once sampling.Wherein, when this time sampling when buffering area is obtained data, then miniature base station produces a corresponding user face data bag; When this time sampling not when buffering area is obtained data, miniature base station produces an empty bag with the user face data bag as correspondence.
Simultaneously, when these a little RTP wrapped corresponding video data, first frequency possibly be per 20 milliseconds or per 10 milliseconds of once sampling.If first frequency is per 20 milliseconds of once sampling, then the production process of user face data bag as stated.If first frequency is per 10 milliseconds of once sampling, then miniature base station can be regarded as Yi Zibao with the data that obtain from buffering area of sampling each time, and to merge per two sub-packet be a user face data bag.Also promptly, each user face data bag has one first Zi Bao and one second son bag, and the timestamp of the wherein corresponding first son bag is registered as the timestamp of corresponding this user face data bag.In addition, when certain sampling not when buffering area is obtained data, miniature base station produces an empty bag with the child bag as correspondence.
Because need not family expenses Node B gateway (HNBGW), the establishment of buffering area, miniature base station can automatically the RTP that possibly comprise shake that is received from the Internet be wrapped the regular basicly stable downlink user face packet of speed that is.Further, because miniature base station can intelligence be mended bag, thus can solve the phenomenon of substitute that the Internet produces, to keep the continuity of downlink user face packet.In sum, (mean opinion score, MOS) value can reach 3 or 4 to the average suggestion pointer of the audio or video data that miniature base station can provide, and is higher than traditional M OS value 2.
Then, in step S120, the judgement last time is transferred to a subscriber equipment, and (user equipment, whether last user face data bag UE) exists.When last user face data bag does not exist, then in step S130, (connection frame number CFN) calculates the CFN of corresponding active user's face packet to miniature base station according to a current connection frame number.Suppose that last user face data bag is A, active user's face packet is B, and CFN (X) is the CFN of respective user face packet X, and current C FN is CUR_CFN (), and then the CFN of the corresponding active user's face packet B in step S130 can be obtained by formula (1).
CFN (B)=(CUR_CFN ()+2) mod 256 formula (1)
When last user face data bag exists, then in step S140, miniature base station calculates the CFN of corresponding active user's face packet according to the CFN of the last user face data bag of correspondence and timestamp, the timestamp that reaches corresponding active user's face packet.Suppose that last user face data bag is A; Active user's face packet is B; CFN (X) is the CFN of respective user face packet X; T (X) is the timestamp of respective user face packet X, the timestamp shake that J receives for be issued to miniature base station from core net, and then the CFN of the corresponding active user's face packet B in step S140 can be obtained by formula (2).
CFN (B)=(CFN (A)+((T (B)-T (A)+J)/160)) mod 256 formula (2)
Afterwards, in step S150, miniature base station with the CFN of active user's face packet and corresponding active user's face packet via the descending subscriber equipment that is sent to of Node B (node B).
In addition, present embodiment also discloses the method for transmitting signals of the miniature base station that is optimized of user face data bag that can subscriber equipment is up.Please with reference to Fig. 2, it illustrates the flow chart according to the method for transmitting signals of the miniature base station of another embodiment.In step S200, miniature base station is wrapped in a buffering area from subscriber equipment reception and a plurality of RTP of buffer memory.Miniature base station can bufcreate earlier in fact, and sets buffering area for only writing.Afterwards, when buffering area be written into reach a time period after, miniature base station is set buffering area again for being read.
Wherein, when these a little RTP wrapped the diaphone audio data, these a little RTP bags can directly be deposited in buffering area.Simultaneously, when these a little RTP wrapped corresponding video data, miniature base station needs was looked the sample frequency of core net and is come these a little RTP are processed.If the sample frequency of core net is per 20 milliseconds of once sampling, then these a little RTP bags can directly be deposited in buffering area; If the sample frequency of core net is per 10 milliseconds of once sampling, then each RTP bag can be one first sub-RTP bag and one second sub-RTP bag by burst (fragmentation).Wherein, the CFN of the first sub-RTP bag is set to the CFN of this RTP bag; The CFN that the CFN of second sub-RTP bag is set to this RTP bag adds 1 again divided by 256 remainder.Then, 2 sub-RTP bags that each RTP is corresponding are deposited in buffering area in regular turn.
In step S210, when these a little RTP encapsulate after buffer memory reaches a time period, to produce a plurality of user face data bags, these a little user face datas comprise active user's face packet to miniature base station with a first frequency sampling buffer.Wherein, this time period for example is 500 milliseconds.Then, in step S220, judge whether a last last user face data bag that receives from subscriber equipment exists.
When last user face data bag does not exist, in step S230, miniature base station stabs the timestamp that calculates corresponding active user's face packet according to a current time.Suppose that active user's face packet is B, T (X) is the timestamp of respective user face packet X, and the current time stab and to be CUR_TIME (), then the timestamp of the corresponding active user's face packet T (B) in step S230 can be obtained by formula (3).
T (B)=CUR_TIME () formula (3)
When last user face data bag exists, in step S240, miniature base station obtains the timestamp of corresponding active user's face packet according to the timestamp of the last user face data bag of correspondence and CFN, the CFN that reaches corresponding this current user face data bag.Suppose that last user face data bag is A; Active user's face packet is B; CFN (X) is the CFN of respective user face packet X; T (X) is the timestamp of respective user face packet X, and J is the timestamp shake, and then the timestamp of the corresponding active user's face packet T (B) in step S240 can be obtained by formula (4).
T (B)=T (A)+((256+CFN (B)-CFN (A)) mod 256) * 160 formula (4)
The method for transmitting signals of the miniature base station that the above embodiment of the present invention disclosed; Utilization is provided with and postpones and mend bag automatically to make that miniature base station can be with regular correct and do not have the user face data bag of the rate stabilization of packet loss for relative time delay (time delay) from the Internet RTP bag, so be able to optimize the overall signal transmission quality between miniature base station and subscriber equipment.In addition, the method for transmitting signals of miniature base station of the present invention not only can calculate the corresponding CFN of downlink user face packet according to the timestamp of RTP bag, also can convert the CFN of up user face data bag into timestamp.
Certainly; The present invention also can have other various embodiments; Under the situation that does not deviate from spirit of the present invention and essence thereof; Those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (8)
1. the method for transmitting signals of a miniature base station is characterized in that, comprising:
This miniature base station receives from a Internet and a plurality of realtime transmission protocol RTP of buffer memory are wrapped in a buffering area;
When those RTP encapsulate after buffer memory reaches a time period; To produce a plurality of timestamps of a plurality of user face data bags and corresponding those user face data bags of record, those user face datas comprise active user's face packet to this miniature base station with this buffering area of first frequency sampling;
When a last user face data bag that is transferred to a subscriber equipment does not exist, this miniature base station calculates the CFN of corresponding this current user face data bag according to a current connection frame number CFN;
When this last user face data bag exists, this miniature base station is according to the CFN that CFN that should last user face data bag and timestamp, the timestamp that reaches corresponding this current user face data bag is calculated corresponding this current user face data bag; And
This miniature base station transmits the CFN of this current user face data bag and corresponding this current user face data bag to this subscriber equipment.
2. the method for transmitting signals of miniature base station according to claim 1 is characterized in that, when this miniature base station not when this buffering area samples data, this miniature base station corresponding this user face data bag that produces be empty the bag.
3. the method for transmitting signals of miniature base station according to claim 1; It is characterized in that if this last user face data bag is A, this current user face data bag is B; CFN (X) is the CFN of respective user face packet X; And this current CFN is CUR_CFN (), then works as this last user face data bag A and does not exist, and the CFN of corresponding this current user face data bag B is CFN (B)=(CUR_CFN ()+2) mod256.
4. the method for transmitting signals of miniature base station according to claim 1 is characterized in that, if this last user face data bag is A; This current user face data bag is B; CFN (X) is the CFN of respective user face packet X, and T (X) is the timestamp of respective user face packet X, and J is the timestamp shake; Then when this last user face data bag A existence, the CFN of corresponding this current user face data bag B is CFN (B)=(CFN (A)+((T (B)-T (A)+J)/160)) mod 256.
5. the method for transmitting signals of miniature base station according to claim 1; It is characterized in that; This miniature base station obtains one first Zi Bao and one second son bag with this this buffering area of first frequency sampling; And merge this first son bag and this second son bag producing this user face data bag, and record is to timestamp that should the user face data bag to timestamp that should the first son bag.
6. the method for transmitting signals of a miniature base station is characterized in that, comprising:
This miniature base station receives also from a subscriber equipment, and a plurality of realtime transmission protocol RTP of buffer memory are wrapped in a buffering area;
When those RTP encapsulate after buffer memory reaches a time period, to produce a plurality of user face data bags, those user face datas comprise active user's face packet to this miniature base station with this buffering area of first frequency sampling;
When a last user face data bag that receives from this subscriber equipment does not exist, this miniature base station stabs the timestamp that calculates corresponding this current user face data bag according to a current time; And
When this last user face data bag exists, this miniature base station is according to the timestamp that timestamp that should last user face data bag and the CFN that connects frame number CFN, reach corresponding this current user face data bag is obtained corresponding this current user face data bag.
7. the method for transmitting signals of miniature base station according to claim 6; It is characterized in that; If this current user face data bag is B, T (X) is the timestamp of respective user face packet X, and this current timestamp is CUR_TIME (); Then work as this last user face data bag and do not exist, the timestamp of corresponding this current user face data bag B is T (B)=CUR_TIME ().
8. the method for transmitting signals of miniature base station according to claim 6 is characterized in that, if this last user face data bag is A; This current user face data bag is B; CFN (X) is the CFN of respective user face packet X, and T (X) is the timestamp of respective user face packet X, and J is the timestamp shake; Then when this last user face data bag A existence, the timestamp of corresponding this current user face data bag B is T (B)=T (A)+((256+CFN (B)-CFN (A)) mod 256) * 160.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110171434.4A CN102843344B (en) | 2011-06-24 | 2011-06-24 | Signal transmission method of minitype base station |
| US13/528,949 US8837368B2 (en) | 2011-06-24 | 2012-06-21 | Transmission method of femtocell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201110171434.4A CN102843344B (en) | 2011-06-24 | 2011-06-24 | Signal transmission method of minitype base station |
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| CN102843344A true CN102843344A (en) | 2012-12-26 |
| CN102843344B CN102843344B (en) | 2015-02-04 |
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| CN201110171434.4A Active CN102843344B (en) | 2011-06-24 | 2011-06-24 | Signal transmission method of minitype base station |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2022006725A1 (en) * | 2020-07-06 | 2022-01-13 | 华为技术有限公司 | Communication method and apparatus |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20150327197A1 (en) * | 2012-08-14 | 2015-11-12 | Nokia Corporation | Method and apparatuses for adjusting time, computer-readable storage media and a computer program product |
| CN105183669A (en) * | 2015-09-22 | 2015-12-23 | 珠海格力电器股份有限公司 | Data storage method and device |
| CN105278879A (en) * | 2015-10-14 | 2016-01-27 | 珠海格力电器股份有限公司 | Processing method and device of monitoring data |
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- 2012-06-21 US US13/528,949 patent/US8837368B2/en not_active Expired - Fee Related
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| US20050007989A1 (en) * | 2001-11-07 | 2005-01-13 | Helmut Wittmann | Inband controlling of a packet-based communications network |
| CN101174969A (en) * | 2006-10-31 | 2008-05-07 | 阿尔卡特朗讯 | A method for synchronising the delivery of broadcast data in a single frequency mobile communication network |
| CN101350663A (en) * | 2007-07-18 | 2009-01-21 | 中兴通讯股份有限公司 | Method and system for data synchronization of multimedia multicast and broadcast service |
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| WO2022006725A1 (en) * | 2020-07-06 | 2022-01-13 | 华为技术有限公司 | Communication method and apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102843344B (en) | 2015-02-04 |
| US8837368B2 (en) | 2014-09-16 |
| US20120327853A1 (en) | 2012-12-27 |
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